/ Dictionary / Index H Hb: Meaning and Definition of Find definitions for: Hb Pronunciation: [key] — Symbol, Biochem. hemoglobin. h.b. Pronunciation: [key] — Football. Football. halfback. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hb (Thesaurus) Hazzard H-beam Related Content Daily Word Quiz: mongrel Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language